Book/Report FZJ-2016-03414

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Numerische Untersuchungen zum Brennstoffkreislauf eines 10 GW$_{th}$ OTTO-Kugelhaufenreaktors im Hinblick auf eine hohe Konversionsrate unter besonderer Berücksichtigung der Absonderung von U-236 durch Isotopentrennung



1976
Kernforschungsanlage Jülich, Verlag Jülich

Jülich : Kernforschungsanlage Jülich, Verlag, Berichte der Kernforschungsanlage Jülich 1365, VII, 94, A2 p. ()

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Report No.: Juel-1365

Abstract: A conversion ratio of near 1.0 can be achieved in a pebble-bed reactor using the (once through then out) loading scheine, having an economic burn-up of the fuel, an economic power density and a moderation ratio, which is considered realistically for the future. The flexibility of the reactor concept and of the fuel element design allows to recycle the fuel during full-power operation. In the present report first the criteria are shown, which are necessary to reach a high conversion ratio. Further it is presented that the conversion ratio increases considerably by closing the fuel cycle in consequence of the building-up of U-233. In this way the fuel inventory and the fuel consumption can considerably be diminished. lt is demonstrated that the building-up and the accumulation of U-236 effects an important deterioration of the neutron econamy. By taking the reprocessed uranium through an isotope separation (for example : ultragas-centrifugation) and by separation of U-236 from the other uranium isotopes it is possible to reduce the fuel consumption considerably. The expenditure and the cost which are necessary for the isotope separation are presented.


Contributing Institute(s):
  1. Publikationen vor 2000 (PRE-2000 ; Retrocat)
Research Program(s):
  1. 899 - ohne Topic (POF3-899) (POF3-899)

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 Record created 2016-06-27, last modified 2021-01-29


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